Set 3 questions on Electrostatics is provided below:-
31) All the following listed below are insulators except
a) Glass
b) Ebonite
c) Plastic
d) Earth
32) The force between two charged bodies was studied by Coulomb in the year -----
a) 1785
b) 1975
c) 1875
d) 1685
33) If q1 and q2 are two point charges separated by distance r, then force between these charges is defined by
a) F = q1 * q2 / r^2
b) F = k * q1 * q2 / r^3
c) F = k * q1 * q2 / r^2
d) F = k * q1 * q2 * r ^2
34) The unit of εo is
a) C^2 N^-1 M^-2
b) C^2 N^-1 m^-2
c) C^-2 N^-1 M^-2
d) C^2 N^-1 M^3
35) The value of k in vacuum is ------------
36) The value of permittivity of free space is -------------
37) The force between two point charges depends on the ----------in which the two charges are situated.
38) Relative permittivity is also know as ------
a) Absolute permittivity
b) Dielectric constant
c) Coulumb Law
d) Nearest permittivity
39) The dielectric constant of air is ---------
40) Forces exerted by charges on each other are equal in -------- and opposite in ----------.
a) Magnitude,direction
b) direction, magnitude
c) Magnitude, velocity
d) direction, velocity
41) The unit of electric field strength is
a) N * C
b) N^-1 * C^-1
c) N * C^-1
d) N ^-1 * C
42) Electric field strength is also know as -----------
43) Force exerted by an electric field on a charge is F =
44) The concept of Field lines was introduced by
a) Coulomb
b) Thales
c) Benjamin Franklin
d) Michael Faraday
45) Lines of force start from ----------- and terminate at --------
a) Positive Charge, Negative Charge
b) Negative Charge, Positive Charge
c) Positive Charge, Positive Charge
d) Negative Charge, Negative Charge
No comments:
Post a Comment